论文信息 - High-efficiency hybrid joint transform correlator with pre-processed input image and replicated binary spectrum array

High-efficiency hybrid joint transform correlator with pre-processed input image and replicated binary spectrum array

The performance of a hybrid joint transform correlator (JTC) is improved by the input image pre-processing method and our proposed spectrum binarizing and replicating technique. The input image pre-processing can enhance the correlation discrimination ability of a JTC system, and the replication of the binary spectrum under an appropriate condition can further substantially increase the light efficiency, the maximum correlation peak intensity, the peak sharpness and the signal-to-noise ratio of the system at the same time by the mechanics of constructive interference. Theoretical analyses are presented. Both the computer simulation and optical experiment verifying the effectiveness of this technique are also given.

[1] Mohammad A. Karim,et al. Improved correlation discrimination in a multi-object bipolar joint transform correlator , 1992 .

[2] Liren Liu,et al. Discrimination capability of a phase-only matched filter made from outline features , 1990 .

[3] M A Karim,et al. Preprocessed multiobject joint transform correlator. , 1993, Applied optics.

[4] D A Gregory,et al. High-efficiency joint-transform correlator. , 1990, Optics letters.

[5] Liren Liu,et al. Comparison of discrimination capabilities of four types of correlation , 1990 .

[6] J. Goodman,et al. A technique for optically convolving two functions. , 1966, Applied optics.

[7] J. Horner,et al. Single spatial light modulator joint transform correlator. , 1989, Applied optics.

[8] J. E. Rau. Detection of Differences in Real Distributions , 1966 .

[9] Joseph L. Horner,et al. 1-F Binary Joint Transform Correlator. , 1990 .

[10] B. Javidi. Nonlinear joint power spectrum based optical correlation. , 1989, Applied optics.

[11] Mohammad S. Alam,et al. Sobel operator based multiobject joint transform correlation , 1995 .

[12] J. Goodman. Introduction to Fourier optics , 1969 .

[13] S. H. Lee,et al. Optical Information Processing: Fundamentals , 1981 .

[14] Bahram Javidi,et al. Binary nonlinear joint transform correlator performance with different thresholding methods under unknown illumination conditions. , 1995, Applied optics.